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amonakov / primus

Low-overhead client-side GPU offloading
ISC License
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SuperTuxKart segfaults with primus when applying new graphics settings #160

Closed akien-mga closed 9 years ago

akien-mga commented 9 years ago

I've tested SuperTuxKart 0.8.1, 0.8.2-beta and 0.8.2-beta2 (released today), all three versions crash when you try to reconfigure the graphics settings (it recreates the whole GL context AFAIU).

The crash only happens when using primus, there is no issue with VirtualGL (and no issue with my Intel GPU and mesa either).

I'm using the 346.35 version of nvidia's drivers, with the latest master branch for primus.

I'd gladly provide a backtrace, but I'm a gdb noob and I can't manage to get a backtrace for "optirun -b primus supertuxkart" (obviously gdb optirun -b primus supertuxkart does not work).

akien-mga commented 9 years ago

I tested both a locally built STK 0.8.2-beta2 and the upstream portable Linux package, both present the issue.

amonakov commented 9 years ago

optirun -b primus gdb supertuxkart and in gdb thread apply all bt; thanks

akien-mga commented 9 years ago

Thanks for the instructions. Here's the output: https://bpaste.net/show/072edc1400d0

amonakov commented 9 years ago

Thanks for the report; I've pushed a patch that should fix the issue, please report if problems remain.

akien-mga commented 9 years ago

Thanks for the quick fix! I tested the patch and it does fix the issue :-)